It's not perfect - lots of places where text becomes unreadable when in dark mode, and it's a nightmare if you're using Blackboard for an exam or something (it reloads the page when enabling/disabling/changing Night Eye settings - big no-no with online exams!), but you can give it settings that apply to the entirety of the domain (i.e. all sites starting with Blackboard.University.edu). Google in dark mode is absolutely awesome, and the option to just dim pages instead of applying the dark mode filter is AWESOME!